228523688 has 16 divisors (see below), whose sum is σ = 428652000. Its totient is φ = 114216496.

The previous prime is 228523663. The next prime is 228523721. The reversal of 228523688 is 886325822.

It is a Cunningham number, because it is equal to 15117²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26453 + ... + 34011.

It is an arithmetic number, because the mean of its divisors is an integer number (26790750).

Almost surely, 2^228523688 is an apocalyptic number.

It is an amenable number.

228523688 is a deficient number, since it is larger than the sum of its proper divisors (200128312).

228523688 is a wasteful number, since it uses less digits than its factorization.

228523688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11344 (or 11340 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The square root of 228523688 is about 15116.9999669247. Note that the first 4 decimals coincide. The cubic root of 228523688 is about 611.3788463236.

The spelling of 228523688 in words is "two hundred twenty-eight million, five hundred twenty-three thousand, six hundred eighty-eight".